The appeal that was made and then rescinded by the international union in Pittsburgh is really a result of domestic policy in the United States. If it's in the United States, they can look at various import levels for certain goods and the trends of those import levels and can make a case that free trade in those goods is impacting American workers in a negative way.
We don't have that right. We wouldn't have been able to file such an appeal to the Canadian government.
It really has more to do with American domestic trade policy and the relationship between the unions and the United States trade representatives than it does with NAFTA.